Shaffer’s last day will be next Wednesday, according to Facebook. He declined to comment.

Shaffer is a well-known manager at Facebook, having helped lead several past projects including the company’s “Group” product and “Places,” its original location check-in tool. He joined in 2010, when the company acqui-hired his startup, Hot Potato, a check-in service for live events. Prior to Hot Potato, Shaffer spent several years at MLB Advanced Media, the digital arm of Major League Baseball, where he helped build MLB.com.

According to one person with knowledge of the matter, Shaffer is considering opening a venture capital fund.

Zandy, who has been at Facebook for a little more than two years, is leaving to be the associate director of international corporate affairs for Alibaba, as the Chinese e-commerce company gears up for its highly anticipated IPO. Based in Silicon Valley, Zandy will head all corporate and financial communications outside of mainland China. Prior to Facebook, she spent more than five years at the Brunswick Group. Zandy’s last day at Facebook is Friday.

The departures come as Facebook tries to bulk up, particularly to expand its mobile business. Facebook’s chief Mark Zuckerberg has repeatedly said that the company will continue to spend aggressively in 2013 on infrastructure and headcount. At the end of June, it had 5,299 employees, an increase of 15% from the end of last year. Among the hires, it recently added its first CMO Gary Briggs, a high-profile hire from Google, where he was most recently senior vice president of marketing for Motorola Mobility.

However, there have been several notable departures. In May, the company announced that its general counsel Ted Ullyot was leaving. More recently, Gokul Rajaram, a top ad executive, left to lead product engineering at Square, the digital payments company.

Update: An earlier version of this post described Justin Shaffer’s title incorrectly. He is a Facebook product manager.